JP2005090779A - Heat exchanger - Google Patents

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JP2005090779A
JP2005090779A JP2003321119A JP2003321119A JP2005090779A JP 2005090779 A JP2005090779 A JP 2005090779A JP 2003321119 A JP2003321119 A JP 2003321119A JP 2003321119 A JP2003321119 A JP 2003321119A JP 2005090779 A JP2005090779 A JP 2005090779A
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Prior art keywords
heat exchange
heat exchanger
leeward
flat tube
heat exchanging
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Tatsu Kawamata
達 川俣
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Marelli Corp
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Calsonic Kansei Corp
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Priority to JP2003321119A priority Critical patent/JP2005090779A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F28F1/128—Fins with openings, e.g. louvered fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • F28D1/0435—Combination of units extending one behind the other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F28F2009/004—Common frame elements for multiple cores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/02—Arrangements of fins common to different heat exchange sections, the fins being in contact with different heat exchange media

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger capable of being thinned without impairing its heat exchanging performance. <P>SOLUTION: A flat tube 12 of a windward-side heat exchanging part 10A and a flat tube 15 of a leeward-side heat exchanging part 10B are arranged in an offset state so that they are not overlapped to each other when observed from the airflow direction. Whereby the windward-side heat exchanging part 10A and the leeward-side heat exchanging part 10B can be arranged in a state of being adjacent to each other or interfered with each other along the airflow direction. The heat exchanger 10 can be thinned while keeping widths (length along the airflow direction) L1, L2 of the flat tubes 11, 15, that is, keeping a cross-sectional area of a passage of the flat tubes 12, 15, and while keeping the heat exchanging performance. <P>COPYRIGHT: (C)2005,JPO&amp;NCIPI

Description

本発明は、風上側熱交換部と風下側熱交換部とを備える熱交換器に関する。   The present invention relates to a heat exchanger including an upwind heat exchange unit and a downwind heat exchange unit.

従来より、熱交換器には風上側熱交換部と風下側熱交換部とを備える熱交換器がある（例えば特許文献１）。各熱交換部は、一対のヘッダタンクの間に、伝熱管としての扁平チューブを複数多段に積層配置して連通接続して構成されている。なお、各扁平チューブ間には波形状のアウターフィンが介在している。
特開２００２−２１３８４０号公報 Conventionally, a heat exchanger includes a heat exchanger including an upwind heat exchange unit and a leeward heat exchange unit (for example, Patent Document 1). Each heat exchange part is configured by arranging and connecting a plurality of flat tubes as heat transfer tubes in a multistage manner between a pair of header tanks. A wave-shaped outer fin is interposed between the flat tubes.
JP 2002-213840 A

近年、このような熱交換器も小型軽量化が求めれている。しかしながら、単純に熱交換器の薄型化を図って小型化しようとすると、各扁平チューブの幅（通風方向に沿った長さ）が小さくなり通路断面積が小さくなるので、通路抵抗が大きくなり、熱交換性能が性能が落ちてしまう。   In recent years, such heat exchangers are also required to be small and light. However, simply trying to make the heat exchanger thinner and smaller, the width of each flat tube (length along the ventilation direction) becomes smaller and the passage cross-sectional area becomes smaller, so the passage resistance increases. The heat exchange performance is degraded.

本発明は、このような従来技術をもとに為されたものである、熱交換性能を極力低下させずに薄型化できる熱交換器の提供を目的とする。   An object of the present invention is to provide a heat exchanger that has been made based on such a conventional technique and can be reduced in thickness without reducing the heat exchange performance as much as possible.

請求項１記載の発明は、波形状のアウターフィンと交互に設けられ内部に冷媒を流通させる扁平チューブと、前記複数多段の扁平チューブの両端開口部が挿入されて該チューブと連通接続される一対のヘッダタンクと、を有する熱交換部を備え、
前記熱交換部を風上側と風下側とに配置してなる熱交換器において、
前記風上側熱交換部の扁平チューブの風下端と、前記風下側熱交換部の扁平チューブの風上端と、が通風方向からみて重なり合わないようにオフセット配置したことを特徴とするものである。 According to the first aspect of the present invention, a pair of flat tubes provided alternately with wave-shaped outer fins for allowing a coolant to flow therein and a plurality of multi-stage flat tubes having both end openings inserted therein are connected to the tubes. A header tank, and a heat exchange section having
In the heat exchanger in which the heat exchange part is arranged on the leeward side and the leeward side,
The windward lower end of the flat tube of the windward side heat exchanging part and the windward upper end of the flat tube of the leeward side heat exchanging part are offset so as not to overlap each other when viewed from the ventilation direction.

請求項１記載の発明によれば、風上側熱交換部の扁平チューブの風下端と、前記風下側熱交換部の扁平チューブの風上端と、が通風方向からみて重なり合わないようにオフセット配置されているため、通風方向に沿って風上側熱交換部と風下側熱交換部とを近接配置または干渉配置することができる。つまり、各扁平チューブの幅（通風方向に沿った長さ）を維持して熱交換性能を維持したまま、熱交換器を薄型化できる。   According to the first aspect of the invention, the windward lower end of the flat tube of the leeward heat exchange part and the windy upper end of the flat tube of the leeward heat exchange part are offset so as not to overlap each other when viewed from the ventilation direction. Therefore, the windward side heat exchange part and the leeward side heat exchange part can be arranged close to each other or interfere with each other along the ventilation direction. That is, the heat exchanger can be thinned while maintaining the width (length along the ventilation direction) of each flat tube and maintaining the heat exchange performance.

以下、本発明の一実施形態を図面に基づいて説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

図１は本発明の好適な一実施形態の熱交換器としてのエバポレータを示す斜視図、図２は図１中ＩＩ−ＩＩ断面図、図３は扁平チューブのタンクとの連通状態を示す断面図、図４はタンクの分解図である。   1 is a perspective view showing an evaporator as a heat exchanger according to a preferred embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a sectional view showing a communication state between a flat tube and a tank. FIG. 4 is an exploded view of the tank.

この実施形態の熱交換器としてのエバポレータ１０は、車両用空調装置に用いられるもので、空調ユニットケース内で送風機の下流且つヒータコアの上流の配置され、後述する伝熱管としての扁平チューブ１２、１５内部を流通する冷媒と外部を流通する空気との熱交換により、送風機からの送風空気を除湿しつつ冷却するものである。   The evaporator 10 as a heat exchanger of this embodiment is used for a vehicle air conditioner, and is disposed downstream of a blower and upstream of a heater core in an air conditioning unit case, and flat tubes 12 and 15 as heat transfer tubes described later. It cools while dehumidifying the air blown from the blower by heat exchange between the refrigerant circulating inside and the air circulating outside.

この実施形態のエバポレータ１０は、図１に示すように、通風方向に二段に熱交換部１０Ａ、１０Ｂを備える二層式のエバポレータ１０であり、通風方向に沿って上流側から風上側熱交換部１０Ａと風下側熱交換部１０Ｂとが配置されている。   As shown in FIG. 1, the evaporator 10 according to this embodiment is a two-layer evaporator 10 including heat exchange units 10 </ b> A and 10 </ b> B in two stages in the ventilation direction. 10A and the leeward side heat exchange part 10B are arrange | positioned.

風上側熱交換部１０Ａは、波形状のアウターフィン１１と交互に設けられ内部に冷媒を流通させるチューブ１２と、このチューブ１２は別体で形成され、チューブ１２の両端開口部が挿入されて該チューブ１２と連通接続される一対のヘッダタンク１３、１３と、を備える。   The windward side heat exchanging part 10A is provided alternately with the wave-shaped outer fins 11 and the tubes 12 through which the refrigerant flows, and the tubes 12 are formed separately, and both end openings of the tubes 12 are inserted and the tubes 12 are inserted. A pair of header tanks 13, 13 connected in communication with the tube 12.

一方、風下側熱交換部１０Ｂは風上側熱交換部１０Ａと同様に、波形状のアウターフィン１４と交互に設けられ内部に冷媒を流通させるチューブ１５と、このチューブ１５の両端開口部が挿入されて該チューブ１５と連通接続される一対のヘッダタンク１６、１６と、を備える。なお、図１中符号１８、１８はチューブの積層方向最外側で両熱交換部に亘って架設されるサイドプレート（補強部材）であり、図１、４中符号２２は冷媒入口２３および冷媒出口２４を備えるコネクタであり、図４中符号２１はタンク本体２０の開口端を閉塞する閉塞部材であり、図２中符号１９は扁平チューブ内に設けられるインナーフィンである。   On the other hand, the leeward side heat exchanging part 10B is provided with the tubes 15 alternately provided with the wave-shaped outer fins 14 for circulating the refrigerant and the openings at both ends of the tube 15 in the same manner as the upwind side heat exchanging part 10A. And a pair of header tanks 16, 16 connected to the tube 15. Reference numerals 18 and 18 in FIG. 1 are side plates (reinforcing members) installed on the outermost side in the stacking direction of the tubes and extending over both heat exchange portions. Reference numerals 22 in FIGS. 4, reference numeral 21 in FIG. 4 is a closing member for closing the open end of the tank body 20, and reference numeral 19 in FIG. 2 is an inner fin provided in the flat tube.

この実施形態では、図４に示すようにタンク本体２０に形成されるチューブ差込口２５は、風上側熱交換器１０Ａと風下側熱交換器１０Ｂとでは高さが重なり合わないように設定されている。つまり、図２、図３に示すように風上側熱交換部１０Ａの扁平チューブ１２と、風下側熱交換部１０Ｂの扁平チューブ１５と、が通風方向からみて重なり合わないようにオフセット配置されている。そして、風上側熱交換部１０Ａの扁平チューブ１２と、風下側熱交換部１０Ｂの扁平チューブ１５と、を通風方向に沿って近接配置または干渉配置している。結果、扁平チューブ１２の幅（通風方向長さ）Ｌ１および扁平チューブ１２の幅（通風方向長さ）Ｌ２を狭めることなく熱交換器１０の幅Ｌを小さくして薄型化できる。   In this embodiment, as shown in FIG. 4, the tube insertion port 25 formed in the tank body 20 is set so that the height does not overlap between the windward side heat exchanger 10A and the leeward side heat exchanger 10B. ing. That is, as shown in FIGS. 2 and 3, the flat tube 12 of the leeward heat exchange unit 10 </ b> A and the flat tube 15 of the leeward heat exchange unit 10 </ b> B are offset so as not to overlap each other when viewed from the ventilation direction. . And the flat tube 12 of 10 A of windward side heat exchange parts and the flat tube 15 of the leeward side heat exchange part 10B are arrange | positioned adjacently or interfered along the ventilation direction. As a result, the width L of the heat exchanger 10 can be reduced and thinned without reducing the width (length in the ventilation direction) L1 of the flat tube 12 and the width (length in the ventilation direction) L2 of the flat tube 12.

特にこの実施形態の熱交換器１０では、厚みＬがＬ＜Ｌ１＋Ｌ２となっており、厚さＬ’がＬ’＝Ｌ１＋Ｌ２＋ｄとなる従来の熱交換器１００（図５参照）に比べて、大幅に熱交換器１０が薄型化されている。   In particular, in the heat exchanger 10 of this embodiment, the thickness L is L <L1 + L2, and is significantly larger than that of the conventional heat exchanger 100 (see FIG. 5) in which the thickness L ′ is L ′ = L1 + L2 + d. The heat exchanger 10 is thinned.

以上のようにこの実施形態のエバポレータ１０によれば、風上側熱交換部１０Ａの扁平チューブ１２と、風下側熱交換部１０Ｂの扁平チューブ１５と、が通風方向からみて重なり合わないようにオフセット配置されていることを特徴とするため、通風方向に沿って風上側熱交換部１０Ａと風下側熱交換部１０Ｂとを近接配置または干渉配置することができる。これにより、各扁平チューブ１２、１５の幅（通風方向に沿った長さ）Ｌ１、Ｌ２を維持したままつまり扁平チューブ１２、１５の通路断面積を維持したままで熱交換性能を維持しつつ、熱交換器１０を薄型化できる。なお、通風抵抗は若干上昇する。   As described above, according to the evaporator 10 of this embodiment, the flat tube 12 of the leeward heat exchange unit 10A and the flat tube 15 of the leeward heat exchange unit 10B are offset so as not to overlap each other when viewed from the ventilation direction. Therefore, the windward side heat exchanging part 10A and the leeward side heat exchanging part 10B can be arranged close to each other or interfere with each other along the ventilation direction. Thus, while maintaining the width (length along the ventilation direction) L1, L2 of each flat tube 12, 15 while maintaining the heat exchange performance while maintaining the passage cross-sectional area of the flat tube 12, 15, The heat exchanger 10 can be thinned. Ventilation resistance increases slightly.

ここで、上述の実施形態では、風上側熱交換部１０Ａの扁平チューブ１２と風下側熱交換部１０Ｂの扁平チューブ１５と、が通風方向からみて重なり合わないようにオフセット配置されているが、本発明にあっては、少なくとも風上側熱交換部１０Ａの扁平チューブ１２の風下端と風下側熱交換部１０Ｂの扁平チューブ１５の風上端とが通風方向からみて重なり合わないようにオフセット配置されていればよい。   Here, in the above-described embodiment, the flat tube 12 of the leeward side heat exchange unit 10A and the flat tube 15 of the leeward side heat exchange unit 10B are offset so as not to overlap each other as viewed from the ventilation direction. In the invention, at least the leeward end of the flat tube 12 of the windward side heat exchanging part 10A and the leeward end of the flat tube 15 of the leeward side heat exchanging part 10B are offset so as not to overlap each other when viewed from the ventilation direction. That's fine.

図１はこの実施形態の熱交換器としてのエバポレータを示す斜視図。FIG. 1 is a perspective view showing an evaporator as a heat exchanger of this embodiment. 図２は図１中ＩＩ−ＩＩ断面図。2 is a cross-sectional view taken along the line II-II in FIG. 図３は扁平チューブとタンクとの連通状態を示す図。FIG. 3 is a view showing a communication state between the flat tube and the tank. 図４はタンクの分解図。FIG. 4 is an exploded view of the tank. 図５は従来の熱交換器としてのエバポレータの横断面図。FIG. 5 is a transverse sectional view of an evaporator as a conventional heat exchanger.

符号の説明Explanation of symbols

１０…エバポレータ（熱交換器）
１０Ａ…風上側熱交換部
１０Ｂ…風下側熱交換部
１１…アウターフィン（風上側）
１２…扁平チューブ（風上側）
１３、１３…ヘッダタンク（風上側）
１４…アウターフィン（風下側）
１５…扁平チューブ（風下側）
１６、１６…ヘッダタンク（風下側） 10 ... Evaporator (heat exchanger)
10A: Windward side heat exchanging part 10B: Downward side heat exchanging part 11 ... Outer fin (windward side)
12 ... Flat tube (windward)
13, 13 ... Header tank (windward side)
14 ... Outer fin (leeward side)
15 ... Flat tube (leeward side)
16, 16 ... Header tank (leeward side)

Claims (1)

波形状のアウターフィン（１１、１４）と交互に設けられ内部に冷媒を流通させる扁平チューブ（１２、１５）と、前記複数多段の扁平チューブ（１２、１５）の両端開口部が挿入されて該チューブ（１２、１５）と連通接続される一対のヘッダタンク（１３、１６）と、を有する熱交換部（１０Ａ、１０Ｂ）を備え、
前記熱交換部（１０Ａ、１０Ｂ）を風上側と風下側とに配置してなる熱交換器（１０）において、
前記風上側熱交換部（１０Ａ）の扁平チューブ（１２、１２、・・・）の風下端と、前記風下側熱交換部（１０Ｂ）の扁平チューブ（１５、１５、・・・）の風上端と、が通風方向からみて重なり合わないようにオフセット配置されていることを特徴とする熱交換器（１０）。 The flat tubes (12, 15) provided alternately with the wave-shaped outer fins (11, 14) and circulating the refrigerant therein, and the openings at both ends of the multi-stage flat tubes (12, 15) are inserted to A heat exchange section (10A, 10B) having a pair of header tanks (13, 16) connected in communication with the tubes (12, 15);
In the heat exchanger (10) in which the heat exchange unit (10A, 10B) is arranged on the leeward side and the leeward side,
The windward lower end of the flat tubes (12, 12,...) Of the windward heat exchange part (10A) and the windward upper ends of the flat tubes (15, 15,...) Of the leeward heat exchange part (10B). Are arranged so as not to overlap with each other when viewed from the ventilation direction.
JP2003321119A 2003-09-12 2003-09-12 Heat exchanger Pending JP2005090779A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2930456A4 (en) * 2012-12-10 2016-11-16 Mitsubishi Electric Corp Flat tube heat exchange apparatus, and outdoor unit for air conditioner provided with same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2930456A4 (en) * 2012-12-10 2016-11-16 Mitsubishi Electric Corp Flat tube heat exchange apparatus, and outdoor unit for air conditioner provided with same

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